Home / 15,391.32-21,249.90-9,656.64

Finding the Fourth Proportional to 15,391.32, 21,249.90 and 9,656.64

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Solution

The fourth proportional to 15,391.32, 21,249.90 and 9,656.64 is: 13,332.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,391.32 : 21,249.90 = 9,656.64 : x
  2. Step 2: Convert to fraction form
    15,391.32/21,249.90 = 9,656.64/x
  3. Step 3: Cross multiply
    15,391.32x = 21,249.90 × 9,656.64
  4. Step 4: Simplify right side
    15,391.32x = 205,202,634.34
  5. Step 5: Solve for x
    x = 205,202,634.34/15,391.32
  6. Step 6: Final answer
    x = 13,332.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.